20535748 has 6 divisors (see below), whose sum is σ = 35937566. Its totient is φ = 10267872.

The previous prime is 20535737. The next prime is 20535791. The reversal of 20535748 is 84753502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16662724 + 3873024 = 4082^2 + 1968^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2566965 + ... + 2566972.

Almost surely, 2^20535748 is an apocalyptic number.

It is an amenable number.

20535748 is a deficient number, since it is larger than the sum of its proper divisors (15401818).

20535748 is a wasteful number, since it uses less digits than its factorization.

20535748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133941 (or 5133939 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 20535748 is about 4531.6385557544. The cubic root of 20535748 is about 273.8441758781.

It can be divided in two parts, 205 and 35748, that added together give a palindrome (35953).

The spelling of 20535748 in words is "twenty million, five hundred thirty-five thousand, seven hundred forty-eight".